Doctors Roger and Jill Guard were on board flight MH17 returning from a European holiday.

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Pathologist Roger Guard and his wife, GP Jill Guard, are among seven Queenslanders who have died in the MH17 plane crash.

The Malaysia Airlines passenger jet was shot down by a surface-to-air missile over Ukraine, killing all 298 passengers and crew.

Dr Guard, 67, had been head of pathology at Toowoomba Hospital, west of Brisbane, and had been employed by Queensland Health for 44 years.

The couple had three children and two grandchildren.

Their son Paul Guard has told the ABC he was absolutely devastated.

Earlier on Friday, Premier Campbell Newman said nine Queenslanders were on the Malaysia Airlines flight, but a statement from the Prime Minister's office on Friday night revised the Queensland toll to seven.

Qld family hit by both MH17 and MH370 tragedies

It was also revealed a central Queensland family has been hit by both Malaysia Airlines tragedies this year.

Irene and George Burrows, from Biloela, are still mourning their son Rodney and his wife Mary who were on Malaysia Airlines Flight MH370, which disappeared without trace over the southern Indian Ocean in March.

Their step-granddaughter Maree Rizk and her husband Albert, from Sunbury near Melbourne, were among the Australians killed on flight MH17.

Mr and Mrs Rizk were travelling home from a month-long holiday with friends in Europe.

Another Queensland victim has been named as Helena Sidelik, who worked as a personal trainer at Burleigh Heads, in the Gold Coast's south.

Vision Personal Training posted on their Facebook page that Ms Sidelik was returning from a European holiday.

"It is with great sadness and remorse that we have to say goodbye to our much loved family member of Vision Burleigh - Helena, Big H, Mona, aunty H," the post said.

Foreign Affairs Minister Julie Bishop said 28 Australians are now known to have died in the crash, and that there was still a chance that number could rise.

Qld doctors "deeply generous people"

Paul Guard said he immediately suspected the worst about his parents when he heard the news of MH17.

'Chilling, sickening' attack, Premier says

The Premier said the number of Queensland victims may rise as more information becomes available.

"It's chilling, it's sickening. It's hard not to be incredibly emotional and angry about it as well," he said, holding back tears.

"What I want to say today is that my thoughts and prayers are with all Queenslanders who have been touched by this tragedy and there will be many people - this is a small state - who have lost loved ones and I think the impacts will be far reaching across our state.

"TheGovernment will do everything we possibly can and we will continue to work for the [victims'] families and friends."